Schneier on Security: Surveillance Cameras in U.S. Cities: "The Department of Homeland Security (DHS) has requested more than $2 billion to finance grants to state and local governments for homeland security needs. Some of this money is being used by state and local governments to create networks of surveillance cameras to watch over the public in the streets, shopping centers, at airports and more. However, studies have found that such surveillance systems have little effect on crime, and that it is more effective to place more officers on the streets and improve lighting in high-crime areas. There are significant concerns about citizens' privacy rights and misuse or abuse of the system."

(Via Schneier on Security.)